*{
    box-sizing: border-box;
}
body,html,p,img,ul,li,h1,h2,h3,h4,h5,h6{
    margin: 0;
    padding: 0;
}
html{
    font-size: 100px;
    height: 100%;
}
body{
    font-size:12px;
    font-family: "微软雅黑";
    height: 100%;
    color: #444;
}
a{
    text-decoration: none;
    color: black;
}
ul,li{
    list-style: none;
}
input,a{
    outline: none;
}
p{
    display: inline-block;
}
img{
    display: inline-block;
    border: none;
}
i,em{
    font-style: normal;
}
b,strong,h1,h2,h3,h4,h5,h6 {
    font-weight: normal;
}
button{
    border:none;
    background: none;
    outline:none;
}
.clear{
    clear: both;
    overflow: hidden;
}
header,nav,.main,footer,ul,.foot,.head{
    margin: 0 auto;
}